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Percent to Fraction Calculator

Percent to Fraction Calculator

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This calculator writes a percentage as a fraction over 100 and simplifies it, e.g. 37.5% = 3/8.

Going the other direction from a percentage back to a fraction means dividing by 100 and then simplifying, a couple of steps that are easy to fumble when the percentage isn't a round number. Enter any percentage here — including decimal percentages like 37.5% — and this calculator converts it to a fraction and reduces it to its simplest terms automatically. It's useful for homework, recipe conversions, or any time you need an exact fractional value instead of a percentage.

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  • How the conversion works: the percentage is divided by 100 to get a decimal, which is then written as a fraction and simplified.
  • Percentages over 100% convert to fractions greater than 1, e.g. 150% = 3/2.
  • Works for decimal percentages too, e.g. 37.5% simplifies to 3/8.

How do I convert a percent to a fraction by hand?

Write the percentage over 100, then simplify by dividing both numerator and denominator by their greatest common divisor.

What is 37.5% as a fraction?

37.5% = 37.5/100 = 375/1000, which simplifies to 3/8.